The quotation, from On the question of agricultural collectivization, reads: "We should trust the masses and we should trust the party. These are two fundamental principles. If you doubt these two principles, then nothing can be done." (我们应当相信群众， 我们应当相信党，这是两条根本的原理。如果怀疑这两条原理， 那就什么事情也做不成了)